Journal
PHYSICS LETTERS B
Volume 672, Issue 3, Pages 235-239Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2008.12.068
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Funding
- DOE [DE-FG02-91 ER40626]
- GNSF grant [074624270]
- National Science Foundation [PHY-0652363]
- Ministry of Education, Science and Culture of Japan [18740170]
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We consider extensions of the next-to-minimal supersymmetric model (NMSSM) in which the observed neutrino masses are described in terms of effective dimension six (or seven) rather than dimension five operators. All such operators respect the discrete symmetries of the model. The new particles associated with the double (or triple) seesaw mechanism can have sizable couplings to the known leptons, even with a TeV seesaw scale. In the latter case some of these new short-lived particles could be produced and detected at the LHC. (C) 2009 Elsevier B.V. All rights reserved.
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